/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Selection/GeometrySelectionManager.h
Test if a World-space ray "hits" the current active target set, which can be used to (eg) determine if a higher-level user interaction for selection should "Capture" the click
true on hit
virtual bool RayHitTest ( const FRay3d & WorldRay, [FInputRayHit](API\Runtime\InteractiveToolsFramework\FInputRayHit) & HitResultOut )